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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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igb: add registers etc. printout code just before resetting adapters
This patch adds registers (,tx/rx rings' status and so on) printout code just before resetting adapters. This will be helpful for detecting the root cause of adapters reset. Signed-off-by: Taku Izumi <izumi.taku@jp.fujitsu.com> Signed-off-by: Koki Sanagi <sanagi.koki@jp.fujitsu.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Taku Izumi
David S. Miller
parent
84f4ee902a
commit
c97ec42a7a
@ -201,6 +201,336 @@ MODULE_DESCRIPTION("Intel(R) Gigabit Ethernet Network Driver");
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MODULE_LICENSE("GPL");
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MODULE_VERSION(DRV_VERSION);
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struct igb_reg_info {
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u32 ofs;
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char *name;
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};
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static const struct igb_reg_info igb_reg_info_tbl[] = {
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/* General Registers */
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{E1000_CTRL, "CTRL"},
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{E1000_STATUS, "STATUS"},
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{E1000_CTRL_EXT, "CTRL_EXT"},
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/* Interrupt Registers */
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{E1000_ICR, "ICR"},
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/* RX Registers */
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{E1000_RCTL, "RCTL"},
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{E1000_RDLEN(0), "RDLEN"},
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{E1000_RDH(0), "RDH"},
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{E1000_RDT(0), "RDT"},
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{E1000_RXDCTL(0), "RXDCTL"},
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{E1000_RDBAL(0), "RDBAL"},
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{E1000_RDBAH(0), "RDBAH"},
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/* TX Registers */
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{E1000_TCTL, "TCTL"},
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{E1000_TDBAL(0), "TDBAL"},
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{E1000_TDBAH(0), "TDBAH"},
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{E1000_TDLEN(0), "TDLEN"},
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{E1000_TDH(0), "TDH"},
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{E1000_TDT(0), "TDT"},
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{E1000_TXDCTL(0), "TXDCTL"},
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{E1000_TDFH, "TDFH"},
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{E1000_TDFT, "TDFT"},
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{E1000_TDFHS, "TDFHS"},
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{E1000_TDFPC, "TDFPC"},
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/* List Terminator */
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{}
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};
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/*
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* igb_regdump - register printout routine
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*/
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static void igb_regdump(struct e1000_hw *hw, struct igb_reg_info *reginfo)
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{
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int n = 0;
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char rname[16];
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u32 regs[8];
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switch (reginfo->ofs) {
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case E1000_RDLEN(0):
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for (n = 0; n < 4; n++)
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regs[n] = rd32(E1000_RDLEN(n));
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break;
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case E1000_RDH(0):
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for (n = 0; n < 4; n++)
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regs[n] = rd32(E1000_RDH(n));
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break;
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case E1000_RDT(0):
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for (n = 0; n < 4; n++)
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regs[n] = rd32(E1000_RDT(n));
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break;
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case E1000_RXDCTL(0):
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for (n = 0; n < 4; n++)
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regs[n] = rd32(E1000_RXDCTL(n));
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break;
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case E1000_RDBAL(0):
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for (n = 0; n < 4; n++)
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regs[n] = rd32(E1000_RDBAL(n));
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break;
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case E1000_RDBAH(0):
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for (n = 0; n < 4; n++)
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regs[n] = rd32(E1000_RDBAH(n));
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break;
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case E1000_TDBAL(0):
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for (n = 0; n < 4; n++)
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regs[n] = rd32(E1000_RDBAL(n));
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break;
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case E1000_TDBAH(0):
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for (n = 0; n < 4; n++)
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regs[n] = rd32(E1000_TDBAH(n));
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break;
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case E1000_TDLEN(0):
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for (n = 0; n < 4; n++)
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regs[n] = rd32(E1000_TDLEN(n));
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break;
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case E1000_TDH(0):
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for (n = 0; n < 4; n++)
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regs[n] = rd32(E1000_TDH(n));
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break;
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case E1000_TDT(0):
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for (n = 0; n < 4; n++)
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regs[n] = rd32(E1000_TDT(n));
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break;
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case E1000_TXDCTL(0):
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for (n = 0; n < 4; n++)
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regs[n] = rd32(E1000_TXDCTL(n));
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break;
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default:
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printk(KERN_INFO "%-15s %08x\n",
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reginfo->name, rd32(reginfo->ofs));
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return;
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}
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snprintf(rname, 16, "%s%s", reginfo->name, "[0-3]");
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printk(KERN_INFO "%-15s ", rname);
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for (n = 0; n < 4; n++)
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printk(KERN_CONT "%08x ", regs[n]);
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printk(KERN_CONT "\n");
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}
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/*
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* igb_dump - Print registers, tx-rings and rx-rings
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*/
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static void igb_dump(struct igb_adapter *adapter)
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{
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struct net_device *netdev = adapter->netdev;
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struct e1000_hw *hw = &adapter->hw;
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struct igb_reg_info *reginfo;
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int n = 0;
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struct igb_ring *tx_ring;
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union e1000_adv_tx_desc *tx_desc;
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struct my_u0 { u64 a; u64 b; } *u0;
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struct igb_buffer *buffer_info;
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struct igb_ring *rx_ring;
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union e1000_adv_rx_desc *rx_desc;
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u32 staterr;
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int i = 0;
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if (!netif_msg_hw(adapter))
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return;
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/* Print netdevice Info */
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if (netdev) {
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dev_info(&adapter->pdev->dev, "Net device Info\n");
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printk(KERN_INFO "Device Name state "
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"trans_start last_rx\n");
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printk(KERN_INFO "%-15s %016lX %016lX %016lX\n",
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netdev->name,
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netdev->state,
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netdev->trans_start,
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netdev->last_rx);
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}
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/* Print Registers */
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dev_info(&adapter->pdev->dev, "Register Dump\n");
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printk(KERN_INFO " Register Name Value\n");
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for (reginfo = (struct igb_reg_info *)igb_reg_info_tbl;
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reginfo->name; reginfo++) {
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igb_regdump(hw, reginfo);
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}
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/* Print TX Ring Summary */
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if (!netdev || !netif_running(netdev))
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goto exit;
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dev_info(&adapter->pdev->dev, "TX Rings Summary\n");
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printk(KERN_INFO "Queue [NTU] [NTC] [bi(ntc)->dma ]"
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" leng ntw timestamp\n");
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for (n = 0; n < adapter->num_tx_queues; n++) {
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tx_ring = adapter->tx_ring[n];
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buffer_info = &tx_ring->buffer_info[tx_ring->next_to_clean];
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printk(KERN_INFO " %5d %5X %5X %016llX %04X %3X %016llX\n",
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n, tx_ring->next_to_use, tx_ring->next_to_clean,
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(u64)buffer_info->dma,
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buffer_info->length,
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buffer_info->next_to_watch,
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(u64)buffer_info->time_stamp);
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}
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/* Print TX Rings */
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if (!netif_msg_tx_done(adapter))
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goto rx_ring_summary;
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dev_info(&adapter->pdev->dev, "TX Rings Dump\n");
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/* Transmit Descriptor Formats
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*
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* Advanced Transmit Descriptor
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* +--------------------------------------------------------------+
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* 0 | Buffer Address [63:0] |
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* +--------------------------------------------------------------+
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* 8 | PAYLEN | PORTS |CC|IDX | STA | DCMD |DTYP|MAC|RSV| DTALEN |
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* +--------------------------------------------------------------+
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* 63 46 45 40 39 38 36 35 32 31 24 15 0
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*/
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for (n = 0; n < adapter->num_tx_queues; n++) {
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tx_ring = adapter->tx_ring[n];
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printk(KERN_INFO "------------------------------------\n");
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printk(KERN_INFO "TX QUEUE INDEX = %d\n", tx_ring->queue_index);
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printk(KERN_INFO "------------------------------------\n");
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printk(KERN_INFO "T [desc] [address 63:0 ] "
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"[PlPOCIStDDM Ln] [bi->dma ] "
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"leng ntw timestamp bi->skb\n");
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for (i = 0; tx_ring->desc && (i < tx_ring->count); i++) {
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tx_desc = E1000_TX_DESC_ADV(*tx_ring, i);
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buffer_info = &tx_ring->buffer_info[i];
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u0 = (struct my_u0 *)tx_desc;
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printk(KERN_INFO "T [0x%03X] %016llX %016llX %016llX"
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" %04X %3X %016llX %p", i,
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le64_to_cpu(u0->a),
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le64_to_cpu(u0->b),
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(u64)buffer_info->dma,
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buffer_info->length,
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buffer_info->next_to_watch,
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(u64)buffer_info->time_stamp,
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buffer_info->skb);
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if (i == tx_ring->next_to_use &&
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i == tx_ring->next_to_clean)
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printk(KERN_CONT " NTC/U\n");
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else if (i == tx_ring->next_to_use)
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printk(KERN_CONT " NTU\n");
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else if (i == tx_ring->next_to_clean)
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printk(KERN_CONT " NTC\n");
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else
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printk(KERN_CONT "\n");
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if (netif_msg_pktdata(adapter) && buffer_info->dma != 0)
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print_hex_dump(KERN_INFO, "",
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DUMP_PREFIX_ADDRESS,
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16, 1, phys_to_virt(buffer_info->dma),
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buffer_info->length, true);
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}
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}
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/* Print RX Rings Summary */
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rx_ring_summary:
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dev_info(&adapter->pdev->dev, "RX Rings Summary\n");
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printk(KERN_INFO "Queue [NTU] [NTC]\n");
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for (n = 0; n < adapter->num_rx_queues; n++) {
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rx_ring = adapter->rx_ring[n];
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printk(KERN_INFO " %5d %5X %5X\n", n,
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rx_ring->next_to_use, rx_ring->next_to_clean);
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}
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/* Print RX Rings */
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if (!netif_msg_rx_status(adapter))
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goto exit;
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dev_info(&adapter->pdev->dev, "RX Rings Dump\n");
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/* Advanced Receive Descriptor (Read) Format
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* 63 1 0
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* +-----------------------------------------------------+
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* 0 | Packet Buffer Address [63:1] |A0/NSE|
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* +----------------------------------------------+------+
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* 8 | Header Buffer Address [63:1] | DD |
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* +-----------------------------------------------------+
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*
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*
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* Advanced Receive Descriptor (Write-Back) Format
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*
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* 63 48 47 32 31 30 21 20 17 16 4 3 0
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* +------------------------------------------------------+
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* 0 | Packet IP |SPH| HDR_LEN | RSV|Packet| RSS |
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* | Checksum Ident | | | | Type | Type |
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* +------------------------------------------------------+
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* 8 | VLAN Tag | Length | Extended Error | Extended Status |
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* +------------------------------------------------------+
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* 63 48 47 32 31 20 19 0
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*/
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for (n = 0; n < adapter->num_rx_queues; n++) {
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rx_ring = adapter->rx_ring[n];
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printk(KERN_INFO "------------------------------------\n");
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printk(KERN_INFO "RX QUEUE INDEX = %d\n", rx_ring->queue_index);
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printk(KERN_INFO "------------------------------------\n");
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printk(KERN_INFO "R [desc] [ PktBuf A0] "
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"[ HeadBuf DD] [bi->dma ] [bi->skb] "
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"<-- Adv Rx Read format\n");
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printk(KERN_INFO "RWB[desc] [PcsmIpSHl PtRs] "
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"[vl er S cks ln] ---------------- [bi->skb] "
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"<-- Adv Rx Write-Back format\n");
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for (i = 0; i < rx_ring->count; i++) {
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buffer_info = &rx_ring->buffer_info[i];
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rx_desc = E1000_RX_DESC_ADV(*rx_ring, i);
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u0 = (struct my_u0 *)rx_desc;
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staterr = le32_to_cpu(rx_desc->wb.upper.status_error);
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if (staterr & E1000_RXD_STAT_DD) {
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/* Descriptor Done */
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printk(KERN_INFO "RWB[0x%03X] %016llX "
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"%016llX ---------------- %p", i,
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le64_to_cpu(u0->a),
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le64_to_cpu(u0->b),
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buffer_info->skb);
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} else {
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printk(KERN_INFO "R [0x%03X] %016llX "
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"%016llX %016llX %p", i,
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le64_to_cpu(u0->a),
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le64_to_cpu(u0->b),
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(u64)buffer_info->dma,
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buffer_info->skb);
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if (netif_msg_pktdata(adapter)) {
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print_hex_dump(KERN_INFO, "",
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DUMP_PREFIX_ADDRESS,
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16, 1,
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phys_to_virt(buffer_info->dma),
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rx_ring->rx_buffer_len, true);
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if (rx_ring->rx_buffer_len
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< IGB_RXBUFFER_1024)
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print_hex_dump(KERN_INFO, "",
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DUMP_PREFIX_ADDRESS,
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16, 1,
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phys_to_virt(
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buffer_info->page_dma +
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buffer_info->page_offset),
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PAGE_SIZE/2, true);
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}
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}
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if (i == rx_ring->next_to_use)
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printk(KERN_CONT " NTU\n");
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else if (i == rx_ring->next_to_clean)
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printk(KERN_CONT " NTC\n");
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else
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printk(KERN_CONT "\n");
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}
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}
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exit:
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return;
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}
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/**
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* igb_read_clock - read raw cycle counter (to be used by time counter)
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*/
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@ -3858,6 +4188,8 @@ static void igb_reset_task(struct work_struct *work)
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struct igb_adapter *adapter;
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adapter = container_of(work, struct igb_adapter, reset_task);
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igb_dump(adapter);
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netdev_err(adapter->netdev, "Reset adapter\n");
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igb_reinit_locked(adapter);
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}
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